玉米自交系穗部性状配合力分析

Analysis on the Combining Ability of Maize Inbred-lines for Ear Characters

采用 NC 遗传交配设计 ,对 1 3个玉米育种骨干自交系的单株产量等 9个性状的配合力进行了分析。结果表明 :所测各性状配合力在 P1、P2组亲本系间存在显著或极显著差异。其中 P1组亲本利用潜力大小顺序为 :1 78>独 3 2 1 >478>郑 65 3 >郑 5 8>中 72 >90 46>洛 0 5 >郑 3 2 ,P2组亲本利用潜力大小顺序为 :昌 7-2>郑 2 2 >5 3选 3 >豫 870 1。通过综合衡量 ,我们认为独 3 2 1、478、1 78、昌

Using NCⅡdesign, 13 maize inbred lines were tested for 9 ear characters in 2001. The result showed that there were significant differences among combining ability of P1 or P2.The applied potency sequence of P1 was 178>Du321>478>Zheng653>Zheng58>Zhong72>9046>Luo05>Zheng32, the applied potency sequence of P2 was Chang7 2>Zheng22>53 Xuan3 >Yu8701. 4 maize inbred Lines(Du321?478?178?Chang7 2) were excellent for maize breeding.